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 How to integrate a curve under Y=0

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munchem Posted - 10/16/2013 : 2:44:54 PM
Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 8.5.0 SR1
Operating System: Windows 7

Hi All,

I have a set of data, consisting about 234 points. The plot for the data is pretty much similar to picture on the attachment. What I'm trying to do is to integrate the area between the curve under the X axis or Y=0 and the curve from the data.

I was trying to use the peaks and baseline option, but it didn't work well. Also, i tried to use the integration option on the mathematics analysis option. Didn't work as well.

Is there any way to do it correctly, I really appreciate your help.

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